People and squirrels are very different. Most people will not argue that. But I find that there is one situation in which they're very similar. And that is: when I am driving towards them in my car. Then they're kind of hard to tell apart - especially if the human is kind of hairy.
If we ask a vague question such as 'What is poetry?' we expect a vague answer such as 'Poetry is the music of words ' or 'Poetry is the linguistic correction of disorder.'